Faster clonal turnover in high‐infection habitats provides evidence for parasite‐mediated selection

Paczesniak, Dorota; Adolfsson, Sofia; Liljeroos, Katri; Klappert, Kirsten; Lively, Curtis M.; Jokela, Jukka

doi:10.1111/jeb.12310

Cited by 23 publications

(45 citation statements)

References 55 publications

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“…In both lakes, pressure from virulent coevolving parasites apparently contributes to the maintenance of sexual P. antipodarum on a within-lake spatial scale (e.g. Jokela et al 2009;Vergara et al 2013;Paczesniak et al 2014). Our data extend evidence for the well-documented amonglake association between trematode infection and sexual P. antipodarum (e.g.…”

Section: Discussionsupporting

confidence: 75%

“…Our data extend evidence for the well-documented amonglake association between trematode infection and sexual P. antipodarum (e.g. Lively 1987Lively , 1992Lively & Jokela 2002;Vergara et al 2013) to a smaller geographic scale within multiple lake populations (Grasmere: this study; Alexandrina: Jokela & Lively 1995a, b;Paczesniak et al 2014;Vergara et al 2014).…”

Section: Discussionsupporting

confidence: 65%

“…This depth corresponds to the 'shallow' habitat as defined in previous investigations of P. antipodarum in New Zealand lakes (e.g. Vergara et al 2013;Paczesniak et al 2014). Snails were collected from a minimum of five different rocks per sampling site.…”

Section: Methodsmentioning

confidence: 99%

“…Lively 1987Lively , 1992Lively & Jokela 2002;Neiman et al 2005), several studies at the within-lake level (Jokela & Lively 1995a, b;King et al 2009;Vergara et al 2013;Paczesniak et al 2014) have revealed that fine-scale variation in the relative frequency of sexual P. antipodarum is also associated with parasitism. Most notably, multiple empirical studies (King et al 2009(King et al , 2011bVergara et al 2013) find a higher frequency of sexual P. antipodarum in shallow vs. deep habitats in some lakes.…”

Section: Introductionmentioning

confidence: 99%

“…Nearly all of these within-lake studies have focused on Lake Alexandrina (MacKenzie District, Canterbury, South Island; e.g. Jokela & Lively 1995a, b;Paczesniak et al 2014;Vergara et al 2014); whether the patterns uncovered in Lake Alexandrina are broadly generalizable to other New Zealand lakes remains unclear.…”

Section: Introductionmentioning

confidence: 99%

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Fine-scale association between parasites and sex in Potamopyrgus antipodarum within a New Zealand lake

McKone¹,

Gibson²,

Cook³

et al. 2016

NZ J Ecol

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Why sexual reproduction is so common despite major costs remains a widely debated evolutionary question. One of the most plausible potential explanations is the Red Queen hypothesis, which proposes that coevolving parasites can generate a selective advantage for sex. This hypothesis predicts that sexual reproduction should be most common where individuals experience a relatively high risk of parasitic infection. Here, we test this prediction at a very fine spatial scale by evaluating whether variation in the frequency of infection by sterilising trematode parasites within a single New Zealand lake population is positively associated with similar variation in the relative frequency of sexually vs. asexually reproducing Potamopyrgus antipodarum, a native New Zealand snail. We found that sexual snails were significantly more common in sites within the lake that were subject to a higher frequency of parasite infection, consistent with the prediction of the Red Queen hypothesis. This result extends previous research on the connection between sexual reproduction and infection in P. antipodarum to a new lake and a finer spatial scale than previously documented.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionsupporting

confidence: 65%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fine-scale association between parasites and sex in Potamopyrgus antipodarum within a New Zealand lake

McKone¹,

Gibson²,

Cook³

et al. 2016

NZ J Ecol

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Skipping sex: A nonrecombinant genomic assemblage of complementary reproductive modules

Hojsgaard

Schartl

2020

BioEssays

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The unusual occurrence and developmental diversity of asexual eukaryotes remain a puzzle. De novo formation of a functioning asexual genome requires a unique assembly of sets of genes or gene states to disrupt cellular mechanisms of meiosis and gametogenesis, and to affect discrete components of sexuality and produce clonal or hemiclonal offspring. We highlight two usually overlooked but essential conditions to understand the molecular nature of clonal organisms, that is, a nonrecombinant genomic assemblage retaining modifiers of the sexual program, and a complementation between altered reproductive components. These subtle conditions are the basis for physiologically viable and genetically balanced transitions between generations. Genomic and developmental evidence from asexual animals and plants indicates the lack of complementation of molecular changes in the sexual reproductive program is likely the main cause of asexuals' rarity, and can provide an explanatory frame for the developmental diversity and lability of developmental patterns in some asexuals as well as for the discordant time to extinction estimations.

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The two-fold cost of sex: Experimental evidence from a natural system

2017

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Over four decades ago, John Maynard Smith showed that a mutation causing asexual reproduction should rapidly spread in a dioecious sexual population. His reasoning was that the per‐capita birth rate of an asexual population would exceed that of a sexual population, because asexual females do not invest in sons. Hence, there is a cost of sexual reproduction that Maynard Smith called the “cost of males.” Assuming all else is otherwise equal among sexual and asexual females, the cost is expected to be two‐fold in outcrossing populations with separate sexes and equal sex ratios. Maynard Smith's model led to one of the most interesting questions in evolutionary biology: why is there sex? There are, however, no direct estimates of the proposed cost of sex. Here, we measured the increase in frequency of asexual snails in natural, mixed population of sexual and asexual snails in large outdoor mesocosms. We then extended Maynard Smith's model to predict the change in frequency of asexuals for any cost of sex and for any initial frequency of asexuals. Consistent with the “all‐else equal” assumption, we found that the increase in frequency of asexual snails closely matched that predicted under a two‐fold cost.

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Faster clonal turnover in high‐infection habitats provides evidence for parasite‐mediated selection

Cited by 23 publications

References 55 publications

Fine-scale association between parasites and sex in Potamopyrgus antipodarum within a New Zealand lake

Fine-scale association between parasites and sex in Potamopyrgus antipodarum within a New Zealand lake

Skipping sex: A nonrecombinant genomic assemblage of complementary reproductive modules

The two-fold cost of sex: Experimental evidence from a natural system

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